Best overall AI editor for developers who work in a GUI
Cursor is a VS Code fork with AI designed in rather than bolted on. Its codebase indexing and multi-file editing are the best-integrated in a graphical editor, and it is the most common answer when developers are asked what they actually pay for.
Best for organisations standardising across mixed editors and toolchains
Copilot created this category and remains the safest institutional purchase: it works in every major editor, integrates with GitHub natively, and its enterprise controls are the most mature. Raw agentic capability now trails the newer specialists.
Best for autonomous, feature-sized work by terminal-comfortable developers
Claude Code is the most autonomous mainstream option: a terminal-first agent that reads a codebase, plans, edits across many files, runs tests and iterates. It rewards developers who write precise instructions and frustrates those who want autocomplete.